Total bridges
344
Public highway bridges in DuPage County
County profile · official public datasets
DuPage County, IL
344 public highway bridges tracked in the FHWA National Bridge Inventory: 37.5% rated Good, 54.4% Fair, 8.1% Poor.
- 344
- Public bridges
- 37.5%
- Good condition
- 8.1%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
DuPage County pairs a higher-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- 55th
- of 102 on Poor share
- 8.1%
- Poor-condition share
- 344
- public highway bridges
- 1985
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
DuPage County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, DuPage County ranks #55 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8.1%). DuPage County, Illinois contains 344 public highway bridges. Roughly 37.5% are rated “Good,” 54.4% “Fair,” and 8.1% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
37.5%
129 of 344 rated 7-9
Fair condition
54.4%
187 of 344 rated 5-6
Poor condition
8.1%
28 of 344 rated 4 or below
In-state Poor-share rank
#55 of 102
Among Illinois counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 344 NBI-tracked bridges by lowest applicable component rating.
Good 37.5% (129)
Fair 54.4% (187)
Poor 8.1% (28)
DuPage County's Poor-condition bridges carry 170,375 vehicle crossings a day
That is 1.7% of the county's reported daily bridge traffic on 8.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 6,085 crossings a day against 23,322 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 343 of 344 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
37.2% of DuPage County's bridges have passed the 50-year mark
128 of the 344 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 37.5% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 14.7% of the county's Poor-condition bridge traffic
IL 38 over WINFIELD CREEK, built 1982, carries 25,000 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 28-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 170,375 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When DuPage County's bridges were built
344 bridges with a recorded construction year, grouped by decade
- 1920s 4
1920–1929
4 bridges
- 1930s 11
1930–1939
11 bridges
- 1940s 4
1940–1949
4 bridges
- 1950s
1950–1959
31 bridges
- 1960s
1960–1969
40 bridges
- 1970s
1970–1979
51 bridges
- 1980s
1980–1989
69 bridges
- 1990s
1990–1999
34 bridges
- 2000s
2000–2009
35 bridges
- 2010s
2010–2019
59 bridges
- 2020s 6
2020–2029
6 bridges
What this shows Construction peaked in the 1980s, when 69 of the county's bridges still in the inventory were built, which is 20.1% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1985, 6 years newer than the Illinois average of 1979.
How DuPage County compares with Illinois's closest counties by inventory size
The 5 Illinois counties nearest DuPage County in number of bridges, with their condition splits. Its 8.1% Poor share is the 4th-lowest of these 6. Its average build year of 1985 against a peer-group mean of 1982 is in line with the group.
Showing the 5 closest of 101 Illinois counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Peoria County | 352 | 24.1% | 57.7% | 18.2% | 1983 |
| Macon County | 346 | 25.7% | 58.7% | 15.6% | 1984 |
| Kankakee County | 344 | 40.1% | 53.5% | 6.4% | 1982 |
| DuPage County (this page) | 344 | 37.5% | 54.4% | 8.1% | 1985 |
| Stephenson County | 342 | 61.1% | 36.3% | 2.6% | 1977 |
| Kane County | 336 | 48.2% | 45.5% | 6.3% | 1986 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to DuPage County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for DuPage County, both outside Illinois so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IL (344 bridges here).
- Shelby County, AL · 344 bridges
- Cumberland County, ME · 344 bridges
- Greene County, OH · 344 bridges
- Galveston County, TX · 344 bridges
Similar average build year
Nearest mean year-built outside IL (1985 here).
- Hillsborough County, FL · avg 1985 · 840 bridges
- Lancaster County, NE · avg 1985 · 661 bridges
- Nueces County, TX · avg 1985 · 528 bridges
- Grayson County, TX · avg 1985 · 513 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (344)
I- 55
FairOver: MADISON ST
0.6 M NE OF IL 83, DuPage, IL
Built 1959 Load: 39.5 t ADT: 147,300
FIRST AVE.
FairOver: PALMER DR
0.5 MI. S. OF ILL 64, DuPage, IL
Built 1976 Load: 39.5 t ADT: 1,250
EOLA ROAD
FairOver: I-88 E-W TOLL RD.
2.5M W. IL 59, DuPage, IL
Built 1958 Load: 39.5 t ADT: 16,500
IL 38 WB
FairOver: IL 38 EB RAMP
2.4 M W OF US 45, DuPage, IL
Built 1952 Load: 39.9 t ADT: 47,200
IL 83
FairOver: RR - METRA
0.1 M S OF IL 19, DuPage, IL
Built 1972 Load: 40.2 t ADT: 45,500
IL 83
FairOver: US 34
1.5 M W OF I-294, DuPage, IL
Built 1986 Load: 40.2 t ADT: 66,500
IL 390 ELGIN-OHAR
FairOver: W BR DU PAGE RIVER
EAST OF LAKE STREET, DuPage, IL
Built 1992 Load: 40.2 t ADT: 25,700
FABYAN PARKWAY
FairOver: KRESS CREEK
0.66 MI S OF IL 38, DuPage, IL
Built 1971 Load: 40.2 t ADT: 8,800
CRECENT BLVD.
FairOver: I-355 & IL-53
0.27S.ST.CHARLES RD., DuPage, IL
Built 1988 Load: 40.2 t ADT: 2,200
71ST.ST.
FairOver: I-355
1.5M.E.OF IL-53, DuPage, IL
Built 1989 Load: 40.2 t ADT: 4,050
75TH. ST. EB & WB
FairOver: I-355
1.25M.E.OF IL-53, DuPage, IL
Built 1989 Load: 40.2 t ADT: 22,600
IL 56
FairOver: PRVT RD & BIKE PATH
2.5 M E OF IL 59, DuPage, IL
Built 1985 Load: 40.5 t ADT: 19,600
IL 38
FairOver: IL 53
IL 38 & IL 53, DuPage, IL
Built 1989 Load: 40.5 t ADT: 37,700
IL 64
FairOver: I-355
0.2 M W OF IL 53, DuPage, IL
Built 1988 Load: 40.5 t ADT: 40,600
FERRY RD
FairOver: WB DUPAGE RIVER
0.2 MI E OF RIVER RD, DuPage, IL
Built 1998 Load: 40.5 t ADT: 5,450
I-355 NB & SB
FairOver: IL-38
1M.E.OF IL-53, DuPage, IL
Built 1989 Load: 40.5 t ADT: 121,600
MAPLE AVE.
FairOver: I-355
1M.E.OF IL-53, DuPage, IL
Built 1989 Load: 40.8 t ADT: 16,000
IL 83 NB
FairOver: IL 56
IL 83 OVER IL 56, DuPage, IL
Built 1972 Load: 41.5 t ADT: 55,800
IL 53
FairOver: PRENTISS CREEK
2.2 M S OF US 34, DuPage, IL
Built 1987 Load: 41.5 t ADT: 25,400
I- 55 NB TO I-355
FairOver: I- 55
1 M W OF LEMONT RD, DuPage, IL
Built 2007 Load: 41.5 t ADT: 28,000
I-355 SB TO I-88 E
FairOver: I-355 FINLEY & I-88
1.3 M.E. OF IL-53, DuPage, IL
Built 1989 Load: 41.5 t ADT: 16,800
I-290 EB TO US 20
FairOver: IL 64 (NORTH AVE)
.1 MI. W. OF I-290, DuPage, IL
Built 1961 Load: 41.8 t ADT: 15,600
IL 59
FairOver: KRESS CREEK
0.7 M S OF IL 38, DuPage, IL
Built 1931 Load: 41.8 t ADT: 25,300
IL 59
FairOver: ABANDONED RR
0.66 M S OF IL 64, DuPage, IL
Built 1975 Load: 41.8 t ADT: 26,900
IL 83
FairOver: RR - BNSF BRLGTN RD
0.7 M S OF US 34, DuPage, IL
Built 1986 Load: 41.8 t ADT: 66,500
22ND ST (CERMAK RD
FairOver: I- 88 I-294 RAMPS
0.3 M W OF I-294, DuPage, IL
Built 1958 Load: 41.8 t ADT: 9,600
I-355
FairOver: BN RR
1M.E.OF IL-53, DuPage, IL
Built 1989 Load: 41.8 t ADT: 145,100
IL 83
FairOver: IL 19
2 M S COOK CO LINE, DuPage, IL
Built 1972 Load: 42.1 t ADT: 45,500
FAU-2635 Prospect
FairOver: Springbrook
0.4 MI N OF IL-19, DuPage, IL
Built 1994 Load: 42.1 t ADT: 7,900
GARY AV
FairOver: SOO-METRA RR
0.5 MI N CENTRAL AV, DuPage, IL
Built 1993 Load: 42.1 t ADT: 5,650
31ST ST
FairOver: IL 83
1 M S I-88 EW TOLL, DuPage, IL
Built 1974 Load: 42.4 t ADT: 14,200
I-355 NB & SB
FairOver: FULLERTON & CC&P RR
0.3M.W.OF IL-53, DuPage, IL
Built 1989 Load: 42.8 t ADT: 106,100
I88 EB E-W TOLL
FairOver: NAPERVILLE/WHEAT RD
0.1MI N OGDEN AVE, DuPage, IL
Built 2007 Load: 42.8 t ADT: 70,400
22ND ST (CERMAK RD
FairOver: SALT CREEK
1.7 M E OF IL 83, DuPage, IL
Built 1932 Load: 43.1 t ADT: 9,950
55TH ST
FairOver: IL 83
1.5 M S US 34, DuPage, IL
Built 1967 Load: 43.1 t ADT: 21,000
KRESS RD
FairOver: UP RAILROAD CO
0.3 MI N OF IL 38, DuPage, IL
Built 1992 Load: 43.1 t ADT: 5,900
US 34
FairOver: IL 53
0.5 M S I-88, DuPage, IL
Built 1960 Load: 43.4 t ADT: 22,500
IL 56
FairOver: I-355
1 M E OF IL 53, DuPage, IL
Built 1988 Load: 43.4 t ADT: 33,000
IL 83
FairOver: SALT CREEK
0.8 M S ST CHRLES RD, DuPage, IL
Built 1937 Load: 43.7 t ADT: 61,200
US 20
FairOver: IL 83
1.25 M N OF IL 64, DuPage, IL
Built 1969 Load: 44.1 t ADT: 28,500
IL 83
FairOver: RR - BNSF
0.7 M N OF IL 171, DuPage, IL
Built 1997 Load: 44.1 t ADT: 24,600
US 20
FairOver: SALT CREEK
WOODDALE & US 20, DuPage, IL
Built 1969 Load: 44.7 t ADT: 28,500
CHICAGO AVE
FairOver: IL 83
0.5 M S OF US 34, DuPage, IL
Built 1991 Load: 45.0 t ADT: 4,100
IL 83
FairOver: DES PLAINES RIVER
0.6 M N OF ILL 171, DuPage, IL
Built 1934 Load: 45.4 t ADT: 32,400
IL 38
FairOver: E BR DU PAGE RIVER
0.4 M E OF IL 53, DuPage, IL
Built 1989 Load: 45.4 t ADT: 37,700
CH 60 / N Thorndal
FairOver: Salt Creek
1.6 MI E I-290, DuPage, IL
Built 2009 Load: 45.7 t ADT: 2,800
WASHINGTON ST
FairOver: FAI 88
1M.W.OF N/VILLE RD., DuPage, IL
Built 1958 Load: 45.7 t ADT: 10,900
HILL AVE.
FairOver: I-355 & IL-53
.34 S.ST.CHARLES RD., DuPage, IL
Built 1988 Load: 45.7 t ADT: 2,650
IL 38 N FRNT RD
FairOver: SALT CREEK
0.5 E OF IL 83, DuPage, IL
Built 1930 Load: 46.0 t ADT: 2,650
MEDINAH RD
FairOver: SPRING BROOK
0.5 MI N US-20, DuPage, IL
Built 2005 Load: 46.3 t ADT: 5,450
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.